5160959domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest initial value k that reaches 1 in n steps when iterating the map m -> rad(m)-1, where rad(m) is the squarefree kernel of m (A007947).at n=36A075426Primes resulting from serial multiplication of even composites, minus 1.at n=5A093155Prime numbersat n=358907